The long family spent $38.62 for school supplies and $215.78 for new school clothes. they paid sales tax on their purchases. if the long family paid $269.07 total, determine if they paid the correct amount.
a. the long family paid $2.63 too little for their purchases.
b. the long family paid the correct amount for their purchases.
c. the long family paid $1.61 too much for their purchases.
d. the long family paid $2.63 too much for their purchases.

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

You need to solve a system of equations. you decide to use the elimination method. which of these is not allowed? 3x - 2y = 7 3x + 4y = 17 equation 1 equation 2

If there are 3.281 feet in 1 meter, how many inches are in one centimeter