What is the solution to this system of equations? 3x + y = 17 x + 2y = 49
a. it has no solution.
b. it has infinite solutions.
c. it has a single solution: x = 15, y = 17.
d. it has a single solution: x = -3, y = 26.

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

X+y=-4 x-y=2 use elimination with adding and subtraction

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$