How do you do 1500 x 3/4

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earned $75 in interest. how much interest will she earn during the following year? show your work and explain your reasoning in the space provided below.