5 points
Read this question "When Jeny was born, her grandparents invested
$1000 in a fixed rate savings account at a rate of 7% compounded
annually. The money will go to Jeny when she turns 18 to help with her
college expenses. What amount of money will Jeny receive from the
investment? what is the value of Pin this problem?
Compound laterest
2-21
For compound interest
. annually means once per year in = 1)
quarterly means "times per year" (n)
• monthly means "12 times per year in - 12).
O 1000
0.07
O 18

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