Write a numerical expression for the phrase and simplify it.16 less than -7
A. -7 - 16; 23
B. -7 - 16; -23
C. 16 - (-7); 23
D. 16 - 7; 9
Answer: B
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Solve the problem.If one must always move downward or sideways along the lines of the graph shown, how many different paths are there from point A to point C?
A. 14 B. 10 C. 8 D. 12
Solve the problem.There are 27 students in Ms. Pool's first grade class. All of of the students speak either Spanish or English, and some speak both languages. If 26 of the students speak English and 19 speak Spanish, how many speak Spanish but not English?
A. 26 B. 8 C. 1 D. 19
Find the indicated root, or state that the expression is not a real number.
A. -10 B. 10 C. 100 D. 40
Solve the problem.Two sound waves, producing the pressures src="https://sciemce.com/media/4/ppg__jhjhj0506192304__f1q105g6.jpg" alt="" style="vertical-align: -4.0px;" />Round k to the nearest ten-thousandth, if necessary.
A. a = 10; k = 929.9437
B. a = 3.2; k = 929.9437
C. a = 10; k = 0.6435
D. a = 3.2; k = 0.9273
and 
combine on a person's ear drum to produce the pressure 
Graph P in 
by 
and use the graph to estimate values for a and k so that