The owner of a bike shop sells unicycles and bicycles and keeps inventory by counting seats and wheels. one day, she counts 21 seats and 30 wheels. the equation representing the total number of seats is u + b = 21 where u is the number of bicycles and b is the number of bicycles.
a. 2u + b = 21
b. u + 2b = 30
c. 2u + b = 30
d. u + 2b = 21

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

The bake stars picked 907 apples last weekend at a local orchard they made caramel apples and sold them in the bakery in trays of 6

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)