Let x = Danielle, x + 5 = her sister, and .5x = her brother.
x + x + 5 + .5x = the sum of their ages.
Then we simplify to get 2.5x + 5 = the sum of their ages.
Answer:
B.
Step-by-step explanation:
Range is all the set y values.
Answer:
-9x² + 5x + 11
Step-by-step explanation:
-5x² + (-4x²) + 5x + 2 + 9
-9x² + 5x + 11
Answer:
203 feet.
Step-by-step explanation:
Please find the attachment.
Let h represent the height of the building.
We have been given that at 3:30 in the afternoon in mid-September the Kimball Tower casts a shadow about 290 feet long when the sun's rays come down at an angle about 35 degrees above the horizontal.
We know that tangent relates opposite side of a right triangle to its adjacent side.

Upon substituting our given values in above formula, we will get:






Therefore, the building is approximately 203 feet high.
To find the fee for three weeks, we need to multiply the fee for one week by 3.
7.50 * 3 = 22.5
Subtract:
305 - 22.5 = 282.5
Javier will have $282.50