Choose a system of equations with the same solution as the following system:
4x − 2y = 6
2x + y = 5
a.−4x − 2y = 10
2x − 3y = 21
b.4x + 2y = 10
10x + y = 21
c.−4x − 5y = −1
2x − 6y = 10
d.3x + 2y = 6
9x + y = 17

Cumulative examcumulative exam active13time remaining02: 44: 18the graph represents the data cost for monthly internetservice for a cell phone.which function, c(x), represents the monthly cost in dollarsin terms of x, the number of gigabytes used in a month? cell phone internet service(15,5x + 10150,0sx522 < x < 664x115, osx< 25x + 20, 2< x< 650, 65815%,monthly cost (s)20x + 5| 50x,0 < x < 22 < x < 664x( 15x, osx< 2c(x) = 5x + 10, 2< x< 6150x, 65 x5+1234 5 6 7 8 9 10 11 12gigabytes used

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?