Christine buys a necklace that cost $18.62 and a ring that costs $7.98. She used a 35%-off coupon on the purchase. If Christine pays with a $20 dollar bill, how much change should she get back?

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

An electrician cuts a 136 foot long piece of cable. one piece is 16 feet less than 3 times the length of the other piece. find the length of each piece

Care repairs are less than or equal to $500