Plz ! estimate. then find the sum or difference.
743.5 - 462.87=
98.01 + 52.003=
74.9 - 16.227=

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! )

Solve the equation for b: a= (1/2)(b)(h)

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.