Matt bought a skateboard for $67.50 and a pair of kneepads for $9.75. if the sales tax was $4.64, how much did he spend alltogether?

$81.89

Step-by-step explanation:

67.50 + 9.75 + 4.64 = 81.89

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!