Answer:
13
Step-by-step explanation:
f(-3)=2(-3)-5(-3)+4. = -6+15+4= 13. f(a)=13
Answer:
5 boys to 9 girls
Step-by-step explanation:
Let x = the number of boys
Boys = x
Girls = x + 4
x + (x + 4) = 14
2x + 4 = 14
2x = 10
x = 5
This means that there are 5 boys. Since girls = x + 4, 5 + 4 = 9. There are 5 boys and 9 girls.
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The explanation is in the picture