Identify the number of terms in the following expression.
5x + 6m + 5

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Evaluate the expression for the given value of the variable 7a - 4a for a =8

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )