What number should be the exponent on the 10 so that the two numbers are equivalent? 2.3 × 10^y = 0.0023

y = -3
y = 3
y = -4
y = 4

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.