Johnny’s has a total of 160 minutes to cut the grass, play basketball, and do homework. He spent x minutes doing homework, 3(x+4) minutes cutting the grass, and 40 minutes playing basketball. How much time did Johnny spend doing homework?

What is negative 3/9 times negative 2/8 ?

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?

Why does the shape of the distribution of the weights of russet potatoes tend to be symmetrical?