Can someone i need this answer but cant figure it out

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2