Types of Electronic Bonds 1. Covalent bonds – 2 or more elements share electrons (ex: H2O) 2. Ionic bonds – strongest bonding. One element takes an electron from another molecule (ex: NaCl) 3. Hydrogen bonds – weakest form of bonding. Hydrogen atom interacts with an electronegative atom like nitrogen, oxygen, or fluorine
Sally is staying at a hotel that charges $88.50 per night plus tax. A 6% tax is applied to the room rate, and an additional onetime untaxed fee of $7.00 is charged by the hotel. Write an expression for Sally’s total charge, in dollars, for staying x nights.
The width of a rectangular floor is w feet. The length of the floor is 8 feet longer than its width. Write expressions for the area and perimeter of the floor in terms of w.
234 people went on a camping trip, taking 68 tents with them. Some of the tents held 2 people, and the rest held 4 people. If all the tents were filled to capacity and every person slept in a tent, how many of the tents were 4-person tents?
−2x + 3y = −10.5 3x + y = 5 Find the values of x and y.
In the xy-plane, the equations 3x + 6y = 30 and x + 2y = a/3 represent the same line for some constant a. What is the value of a?
If m/p = 3, then what is the value of 5p/m?
If y=px, where p is a constant, and y=32 when x=4, then what is the value of y when x=7?
How many milligrams are there in 4 decagrams?
2 trees are being studied. Tree #1 produces 20% more apples than Tree #2. If Tree #1 produces 138 apples, how many apples does Tree #2 produce?