Respuesta :

c 16 because a is 4 and 4 times 4 is equal to 16

Answer:

[tex] \huge \colorbox{red}{ \boxed{ \blue{ \sf}{c.16}}}[/tex]

Step-by-step explanation:

in this Question, you have to plug the value for b into a+b=7 in order to find a:

  • a+b=7
  • a+3=7
  • a=4

once you know that a=4, just substitute into 4a:

  • 4×4=16
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