PLEASE HELP What is the value of y in the solution to this system of equations?

5x+y=9

10x-7y=-18

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?