The fish tank in my Aunt's living room has 10 gallons of water. After 3 weeks, the water level is now at 7.25 gallons. How much water has evaporated?

2.75 gallons of water has evaporated

f(4)=47

Step-by-step explanation:

To find the answer, replace the x’s in the equation with 4. This would make the equation 3(4)^2 + 4 - 5. According to PEMDAS, you would first raise 4 to the power of 2 (16) then multiply it by 3 (48). This makes the equation 48 + 4 - 5. You just need to add and subtract from here. 48+4=52. 52-5=47