4)Find the value of k if (-2)k × (-2)3 = (-2)7​

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Is the number 128.439 a rational number