plz i need help :(

Evaluate the expression if a = 1 and b = 2.
fraction numerator 5 left parenthesis a star times plus 3 b right parenthesis over denominator a b end fraction

A.
20

B.
5.5

C.
15

D.
17.5

Question

plz i need help :(

Evaluate the expression if a = 1 and b = 2.
fraction numerator 5 left parenthesis a star times plus 3 b right parenthesis over denominator a b end fraction
 
 A.
20
 
 B.
5.5
 
 C.
15
 
 D.
17.5

freckles · Answer

$$\frac{5( \star \cdot 3b)}{ab}$$
any idea what the value we should plug in for the star ?

anonymous · Answer

1

freckles · Answer

so you are given 
$$a=1, b=2, \star=1$$

freckles · Answer

replace a with 1 
replace b with 2
replace star with 1
then
$$\frac{5( \star \cdot 3b)}{ab}=\frac{5(1 \cdot 3(2))}{1(2)}$$

anonymous · Answer

no the star is a

freckles · Answer

oh your problem said something about a star in it

anonymous · Answer

and a is 1

anonymous · Answer

sorry about that

freckles · Answer

I'm sorry kind of confused about times plus 
and what that means exactly

freckles · Answer

can you draw the problem or is it really worded like that?

anonymous · Answer

ok

anonymous · Answer

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