Roxanne has $20 and she wants to buy some shirts. she picks one shirt that costs $10.99 and two shirts that cost $4.99 each. which statement best describes if an exact total or an approximate total should be calculated? a. roxanne must add the exact cost of the three shirts so she will know if she has enough money to buy the third shirt. b. roxanne can round the prices of the shirts to the nearest dollar and then add to estimate if she has enough money.

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.

yes i do see that. i say this because i am doing my very best in high school so i can get a scholarship and credits.