A gym membership costs $25 per month plus a membership fee of $50. Which equation represents the
situation?

y=25x+50

Step-by-step explanation:

She has to pay a fee of 50 and then 25 a month. X represents months since we don't know how many months she plans to have a membership.

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold