When a number is multiplied by 4 before subtracting from 68, the result obtained is the same as three times the sum of the number and 4. Find the number.

x = 8

Step-by-step explanation:

68 - 4x = 3x + 12

Now subtract 12 and add 4x to both sides...we get

56 = 7x and

x = 8

180 square centimeters

step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°