Its a word problem. Jann just started a new job. For every 4 hours he works, Jann earns $60. What is the unit rate for how much Jann earns each hour he works?

$15

Step-by-step explanation:

unit rate means how much he earns in 1 hour

so if he earns $60 in 4 hours

then you have to divide 60 by four

which gives you $15

that means he earn $15 in one hour

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b