Lydia wants to purchase guitar lessons. she sees a sign that gives the prices for 7 guitar lessons and 11 guitar lessons. write a linear equation to find the total cost C for d lessons.

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Select the correct answer. in the figure, angle k measures 45°. what is the measurement of angle c? a. 38° b. 45° c. 90° d. 98°

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?