Rewrite the expression without using grouping symbols. y • 4 + y • z

4y + yz

Step-by-step explanation:

the grouping symbols can be parentheses, brackets, or in this case a sign of multiplication ·

you have the expression

y · 4 +y ·z

to eliminate the symbol  · from the first term you just do the multiplications:

y multiplied by 4 is equal to 4y

and to eliminate the symbol  · from the second term, since we don't know the values to y and z, we let them indicates as yz, because the simple fact of two variables written together is indication of a multiplication.

So the result is:

4y + yz

complete the steps to find the area of the trapezoid.

area of rectangle = 256   square units

area of triangle 1 = 24  square units

area of triangle 2 = 16  square units

area of triangle 3 =   96 square units

area of trapezoid = 120  square units

step-by-step explanation:

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