Frances has a health insurance policy that requires her to pay $25 for every doctor visit. Any amount over that is paid by the insurer. This year, Frances visited the doctor five times. The cost of an office visit is $90. How much did the insurer pay Frances’s doctor for the office visits?

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15