30 points!!

Please help

7+3^2(-5+1)divided by 2

2-digit numbers less than 91 which are 1 less than a multiple of 10

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market