Two less than four times a number

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Powerful women's group has claimed that men and women differ in attitudes about sexual discrimination. a group of 50 men (group 1) and 40 women (group 2) were asked if they thought sexual discrimination is a problem in the united states. of those sampled, 11 of the men and 19 of the women did believe that sexual discrimination is a problem. if the p-value turns out to be 0.035 (which is not the real value in this data set), then at = 0.05, you should fail to reject h0. at = 0.04, you should reject h0. at = 0.03, you should reject h0. none of these would be a correct statement.