To join a local square dancing group, jan has to pay a $100 sign-up fee plus $25 dollars per month. write an equation for the cost (y) based on the number of months (x).

y = 25x+100

Step-by-step explanation: You are paying 25$ times how many months he stayed there, plus a 100 dollar sign up fee, so y = 25 dollars per month, plus 100 dollars.

the answer is 62.8 cubic units

y= 2x+7

changed to y= 5x +7

as slope is increased from 2 to 5

therefore it would be less steeper

so, option d) is correct