Milan has scored 19, 23, and 21 points in his three basketball games so far. How many points does he need to score in his next game so that his average (mean) is 22 points per game?

25

Step-by-step explanation:

you would use algebra for this

(the unknown value being x)

(19+23+21+X)÷4 = 22                      (22 would be the 22 points average)

after solving this equation, your X would be 25, so 25 points

b

step-by-step explanation:

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions