The phrase "are supposed to affect" is correct and usable in written English.
It can be used when discussing expectations or assumptions about the impact or influence of something.
Example: "The new policies are supposed to affect employee productivity positively."
Alternatives: "are expected to influence" or "are intended to impact".
They rounded up all the things that are supposed to affect the decision to work -- the unemployment rate in the local labor market, the wage rate, education.
It's a year away from 30, by which time they are supposed to affect some impression of growing up - marriage, babies, steady employment and the like - else they risk catastrophe (like Lily Bart in The House of Mirth) or family scorn (like Valancy Stirling in LM Montgomery's underrated classic The Blue Castle).
The implications are supposed to affect the generation mix of utilities, distribution grid utilization, and electricity price.
Hydrodynamics conditions are supposed to affect light conversion in photobioreactors (PBRs), by modifying light availability of suspended photosynthetic cells.
Through this approach, the poor will find the opportunity to influence policies that are supposed to affect their lives.
As other types of magnetized plasma from the sun, coronal mass ejections (CMEs) also are supposed to affect atmospheres of planets especially at early times.
But I beg to differ: Are we really down and out, mad ursulas wanting to claw our tentacles around victims, thanks to PMS and other regional dilemmas that apparently are suppose to affect our mental state of being?
"Many of the people that this is supposed to affect are not making the [asylum] claims in Greece and Italy because they don't trust the system and are therefore prepared to move on in their own way," Symonds said.
In the case of an imperative representation, the representation is supposed to affect the activities of the consumer by inducing them to bring some state of affairs about.
Although the minimum-age rule is supposed to affect our outcome of interest through several channels, such as maturity when applying for college and learning ability during primary school, these channels do not offset each other.
