What is the mathematical sentence of "A number increasd by 7 is 15? A n - 7 = 15

B n + 7 = 15

C 7n = 15

D. n/7 = 5​

B

Step-by-step explanation:

A number increased by 7 means, 7 was added to the number and the result is 15

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

you would need to know all the numbers that are on there

step-by-step explanation: