Answer:
$13.50
Step-by-step explanation:
You can use the simple interest formula here: I(interest)=P(principal amount)r(interest rate)t(years). I=Prt. So just plug in the numbers. I=90x.15x1=13.5
It's the fourth one y=-1/6x+2/3
y=x+5
if you mean how many she completed INCLUDING the 5 over the summer