Henry earns $7.75 per hour. He just received a 3% raise. How much does he now earn if he works for 40 hours? ​

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?