In 14 minutes the heart will beat 140 times becuase i did 140/10 and got 14
X is how much it costs for one hour, so when you multiply it by 3 1/2, you get the amount of money charged for 3 and a half hours.
Answer:
15% x 48=7.2 so 48-7.2=40.8
Step-by-step explanation:
Answer:
x=5.70156211,−0.70156211
Step-by-step explanation:
F(x)=ax^2+4 thus
a=(f(x)-4)/x^2=(5-4)/(-1)^2=1
Answer: a=1.