It costs the quality company $.14 per mile to run its van. on monday the van traveled 87.6 miles. how much did it cost to run the van that day? round your answer to the nearest cent.
a. $1.23 b. $13.14 c. $6.57 d. $12.26

The answer is D. $12.26. The cost is $0.14 per 1 mile. The question is how much will be per 87.6 miles. Make a proportion: $0.14 per 1 mile. x per 87.6 miles. $0.14 : 1 mile = x : 87.6 miles. Cross the products: x * 1 mile = $0.14 * 87.6 miles. x * 1 mile = $12.26 per mile. x = $12.26 per mile / 1 mile. x = $12.26.

Intersecting secant-tangent theorem states that if a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment.so to break it down: 1. pq acts as the tangent and ps as the secant with an intersection at p.sr = 21rp = 3x + 3pq = 4x + 4following to equation: tangent squared = the two segments multiplied by each otherso (4x + 4) ^ 2 = (3x + 3) • (21) simplifies to 16x^2 - 31x - 47 = 0 or (16x - 47)(x + 1) x = -1 or x = 47/162. pq acts as the tangent and ps as the secant with an intersection at p (again! )sr = 16rp = xpq = 15(15) ^ 2 = 16 • x225 = 16xx = 225/163. the interesting chords are proportional to each other so a ratio is possible to set up: ap dp 10 3 + x = = —— = pc pb 8 xcross multiple to get 10x = (3 + x)(8)x = 12