Answer:
Greta spends$25-$20=$5per week.
(12/30)x100 is 40%
This is percent of incorrect answers. The total percent must be 100% so subtract 100-40=60%.
60% answers were answered correctly.
Y = mx + b

Therefore we have: y = 3x + b.
Put the coordinates of the point (3; 2) to the equation of the line:

Therefore we have: y = 3x - 7
Substitute the coordinates of the point (8; y) to the equation of the line:

Answer:
y = 17.
Answer:
81.25%
Step-by-step explanation:
Given that :
Engine power = 240 hp
Power delivered to drive wheel = 195 hp
Efficiency = (power delivered to drive wheel / Engine power) * 100%
Efficiency = (195 / 240) * 100%
Efficiency = 0.8125 * 100%
Efficiency = 81.25%
The efficiency of transmission and drive mechanism is 81.25%